<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>OPPO</title>
    <style type="text/css">
    *{padding: 0px;margin:0;}
    li{list-style: none}
    .box{
        width: 100%;
        height: 630px;
    }
    .list{
        width: 100%;
        height: 630px;
        overflow: hidden;
    }
    .list li{
        display: inline-block;
        width: 100%;
        height: 630px;
        background-position: center;
        background-repeat: no-repeat;
    }
    .list li img{
        position: absolute;
        left: 100px;
    }
    .list .l1{
        background-image: url('./images/bg1.jpg');
    }
    .list .l2{
        background-image: url('./images/bg2.jpg');
    }
    .list .l3{
        background-image: url('./images/bg3.jpg');
    }
    </style>
</head>
<body>
    <div class="box">
        <ul class="list">
            <li class="l1"><img src="./images/con1.png" alt=""></li>
            <li class="l2"><img src="./images/con2.png" alt=""></li>
            <li class="l3"><img src="./images/con3.png" alt=""></li>
        </ul>
        <div class="progressBar"></div>
    </div>
    <script src="./js/jquery.min.js" type="text/javascript"></script>
    <script type="text/javascript">
    function run()
    {
        var $firstImg = $(".l1");
        var width = $firstImg.css("width");
        $(".li>img").animate({width:"90%"});
    }
        $(function(){
            run();
        });
    </script>
</body>
</html>